IS 12 / IGA 12 Manual Settings / Parameter Descriptions • 29
5.4 FROM / TO (beginning and end of sub range)
You have the opportunity to choose a sub range (minimum 51 °C) within the basic measuring
range of the pyrometer. This sub range corresponds to the analog output. “FROM“ describes
the beginning of this measuring range, “TO“ the end of the range.
With a sub range, it is possible to fulfill the requirements of the “auto” clear mode of the
maximum value storage (see above).
5.5 Analog Output
The analog output has to be selected according to the signal input of the
connected instrument (controller, PLC, etc.).
5.6 SETP (limit contacts)
The instrument is equipped with two independent relay limit switches. These are two separate
switch-over relay contacts, adjustable to any temperature of the pyrometer’s temperature
range. The switch-status is indicated in the display with the LED’s S1 and S2. When the
measuring temperature exceeds the adjusted limit contact temperature the relay switches and
the LED indication is on.
5.7 Temperature display in °C or °F
The temperature can be displayed in °C (Celsius) or °F (Fahrenheit).
5.8 Digital Interface (RS)
Selection between RS232 and RS485. (This adjustment can only be done on
the pyrometer).
5.9 Address
When connecting several pyrometers to one serial interface with RS485, it is
necessary for each instrument to have its own device address for
communication purposes. First, it is necessary to connect each instrument
separately to give it an address. After that, all instruments can be connected
and addressed individually.
Note: Only via own communication program with interface command (not
possible with InfraWin, because InfraWin automatically detects a connected
pyrometer): If parameters should be changed simultaneously on all pyrometers, the
global Address 98 can be used. This allows you to program all pyrometers at the
same time, regardless of the addresses that have already been assigned. If the address
of a pyrometer is unknown, it is possible to communicate with it using the global
Address 99 (connect only one pyrometer).
5.10 Baud Rate (kBaud)
The transmission rate of the serial interface in Baud (Bd) is dependent on the
length of the cable. A standard cable length with RS232 for 19200 Bd is 7 m,
with RS485 2 km. The baud rate is reduced by 50% if the transmission
distance is doubled.
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